it was broadly used. a reporter at cnn put an ad on of this kind and got 15 responses in three hours. we talked to constituents. we looked at craigslist. it was clear that it was massive in terms of the opportunity for prostitution. it's not just prostitution. it's human trafficking. the terrible, terrible abuse of children. so whatever efforts that they were making to keep people off that would do these things, they were failing. maybe necessarily were failing. but it was clear, i think, to most everybody that this was a huge source of the information that leads to prostitution and in some cases human trafficking. >> woodruff: john miller, do you dispute that that's what's been going on at craigslist? >> no. it's probably pretty likely these ads were for prostitution. the question is not, are these ads for illegal services and should law enforcement take action against these ads and the people placing them? but the question is really is this the most effective way to do that? we're not sure that it is. a